Lights up BUT does not cook

My three year old micowave has suddenly stopped cooking.

The digital readout reads normally. Upon typing in the time and heat and hitting the start button, the interior light comes on. The microwave shuts off after only a portion of the designated time has expired and the food or water being heated is still stone-cold. As a side note, there is not any noise to the microwave as there has been during any heating/cooking session.

I've pulled the cover and found that the door switch (behind the key pad) has bubbled and burnt. This switch was cleaned up and tested and continuity is still there. The internal fuse tests good.

I am capable to to the repairs correctly, myself. I just need a little guidance to get the job completed.

Was there any motor that should run as you turn it on, the fan inside and the rotating table motor. try to replace that micro switch at the door that bubbled out and burnt. try to test or replaced right away the industrial diode that is connected from the capacitor to the ground of the microwave.

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

you have one of three problems (H.V. diode shorted or leaky, H.V.capicitor shorted, or the magnrtron tube is beginning to draw excessive current)if thats the case its not usually worth spending that for the mag.,the other two items aren't that expensive

Either the magnatron or the high-voltage capacitor and
diode. Replace the capacitor and diode then if still not
working, replace the magnatron. Its only affordable if you do it
yourself - buy the part on EBAY - lookup "universal magnatron"
Hope ya fix it!

Sabotaged??? What could they mean by that??
It could be a bad control panel or connection, but I would say you have a bad magnetron, the magnetron is mounted loosely, or the RF gasket (mesh washer) on the magnetron is missing, loose or damaged.
I would contact MayTag and see if they have a different authorized servicer in your area, or get on the phone and complain to them in great detail.
Do not put up with this, please.